How long do you sleep every day?

We divide the sleep cycle into five stages: the first stage-falling asleep, which is the transitional period between waking and sleeping. At this stage, people are easy to wake up, which is usually called rest state or semi-sleep state, and the duration is about 10 minute; The second stage-shallow sleep, easy to wake up, people who have difficulty falling asleep often wake up on their own. We usually call it falling asleep, which lasts about 20 minutes. The third stage-intermediate sleep, during which consciousness disappears and it is not easy to wake up, which is usually called sleepy state or deep sleep state, lasting about 40 minutes; The fourth stage-deep sleep, this period of deep sleep, awakening is quite difficult, we usually call it sleep "death", lasting about 20 minutes; The fifth stage-rapid eye movement period, the rapid eye movement period of this period, about 50-60 times/minute, we usually call it dream state, and the duration is about 5- 10 minute.

Sleep bottom line

The time to sleep well is from 9 pm to 1 1. During this period, the human body's energy drops, the reaction is slow, and the thinking is slow, which is conducive to the transition to slow-wave sleep.

The best sleep time is from 1 1 to 6: 00 the next day, while the prime sleep time is from 1 1 to 3: 00 the next day. At this time, the metabolism of the liver is the most vigorous. If you miss this golden time of sleep for a long time, you will have sleep disorders, leading to physical dysfunction.

Healthy sleep

The ancients said, "If you don't sleep for one night, you won't wake up for three days." Everyone works overtime more or less. Even if I slept all day the next night, I would feel uncomfortable. This is the consequence of illegal sleep. Keeping a good sleep is very important for health and fitness and prolonging life. What are the taboos of sleeping?

First, hunger and satiety.

Eating too much and not sleeping well is not conducive to our spleen and stomach digestion, turning dampness into phlegm, which is very harmful to yang. I can't sleep when I'm hungry. It is difficult for me to sleep because my intestines are empty. Some people eat snacks in bed, which is even more unhealthy.

Second, drink more water.

Don't drink too much water when sleeping, especially cold water. If the water stays moist, nocturia will increase. Too much cold water can also hurt the kidneys.

Third, it is not suitable to hide your face.

Sleeping with your head covered will not only lead to poor breathing, but also inhale a lot of carbon dioxide, which is harmful to your health. Therefore, it is necessary to keep breathing smooth when sleeping. Sun Simiao in the Tang Dynasty said, "If you don't cover your head in winter, you will live a long life", so you can't sleep with your head covered.

Fourth, it is not appropriate to be a wind.

After people fall asleep, their adaptability to the environment is reduced, and they are most vulnerable to wind and evil. Therefore, it is best to close the window before going to bed. Even in the hot season, don't covet coolness. Lying in the wind, sleeping in the wind.

Fifth, be calm.

The mood before going to bed is also very important, and the change of mood will cause the disorder of qi and blood, so the mood fluctuation before going to bed will lead to insomnia and even illness.

There are also some small precautions: don't look at the lights when sleeping, don't talk too much before going to bed, don't open your mouth when sleeping, don't crawl, and so on.

Movie sleep

As an amazing master of pop art in the field of graphic design, andy warhol shot his first film "Sleeping" at 1963, with a length of 32 1 minute. The whole film only uses a fixed lens, which silently records the whole process of a person sleeping. It is more appropriate to name the film "Sleeping". In fact, andy warhol's works have obvious traces of industry, which triggered a series of in-depth thinking. He once claimed that his works only expressed himself because he had no deep desire to express himself. If you interpret his works with mixed wisdom, you will naturally become anxious and tired. Maybe this is the main purpose of his filming.

5 animal sleep editor

animal sleep

A sleeping cat

There are many different ways of feeling.

Birds-related animals (such as cranes) sleep with their own feet, canines, such as wolves, dogs and jackals, sleep with their ears close to the ground, bats sleep upside down, spider monkeys sleep with their tails hanging from trees, and fish sleep with their eyes open ... There are thousands of postures, which are very interesting.

Antelopes are always on tenterhooks and are not easy to fall asleep. In order to rest, it often sleeps with the groundhog. In this way, as long as the clever groundhog screams first, the antelope can wake up immediately and escape as soon as possible.

The little monkey loves to play, and the old monkey is afraid that it will run away. When sitting and sleeping, he will hold the monkey's tail tightly with his forelimbs, and then change his right limb when his left limb is tired. Sometimes he simply holds the little monkey in his arms and never relaxes.

When the octopus sleeps, it keeps scratching around its body with two tentacles, and the other tentacles are rolled up to rest. If someone touches its two awake tentacles, the octopus will jump at once.

Yuanyang and his wife are very loving during the day and are inseparable. When sleeping at night, the male uses his right wing to cover the female, and the female uses his left wing to cover the male. In this way, the two of them hooked their necks and "slept together."

Owls catch mice at night and sleep when their eyes are not good during the day. When it sleeps, it often closes one eye. Its vigilance is very high!

Crowds of partridges sleep in a circle, with their heads facing outward and their tails facing inward. So that no matter where the enemy comes from, we can find it.

Many animals have this collective defense behavior when they sleep. Yaks sleep in a circle, the old, the weak and the sick are in the middle, and they are guards in the periphery in their prime.

Hundreds of walruses huddled together to sleep, and only one was awake to stand guard. If it is tired, it will wake up its companions to change their posts and go to sleep in a daze. So wake up one by one, take turns to keep watch, and protect collective safety.

Spiders sleep under the eaves, and their feet are always wrapped with a spider silk, which is connected to the spider web in the corner. If a flying insect hits a spider web and the spider silk bounces, the spider will soon get the message and come and eat "snacks".

Before a giraffe goes to bed, it kneels on its two front legs, jumps forward with its two rear legs, sits on the ground and begins to sleep soundly. And its long neck, pointing high to the sky, sleeps gracefully.

Monkeys always sleep in trees. When they fall asleep, they hide their heads between their legs, their arms tightly stick to the trunk, curl up into a ball, and have a wooden cone, which is mixed with the trunk to play the role of stealth protection.

The wild goat is timid but clever. In order to get a good sleep, he went to sleep with a groundhog. Because the groundhog barks warily as soon as it finds the situation, the wild goat runs every day as soon as it hears it.

Dormouse is the most famous "sleepy" among hibernating animals. It slept for six months without eating or drinking. Its breathing is quite weak and its body is almost stiff. It doesn't know when it was kicked, but when it woke up, it immediately became alive and kicking.

Badger's hibernation is interesting. When hibernating, he put his mouth to the anus, eating and pulling, naturally circulating and maintaining life.

Pulsatilla sleeps with one foot standing, the other foot curled up and his mouth hidden under his wings.

When bats sleep, they hook their hind feet on rocks or branches and sleep sideways.

Partridges always huddle together when sleeping, with their heads in a circle around them. No matter which direction the danger comes from, they can accurately find it.

Goose and walrus have one thing in common when they sleep. They all keep one person on his guard. The difference is that when hundreds of walruses sleep together, the walrus on guard is tired, and it will wake up its companions to "change their posts". The geese are a pair of "lovers" who sleep together sweetly, and the lonely geese are always on the alert.

Many fish without eyelids sleep with their eyes open, while octopus keeps two tentacles hovering around its body while sleeping, and the other tentacles are rolled up to rest. Once the enemy touches the hovering tentacles, the octopus will immediately wake up and go into battle.